Continue implementation QUnit/TestSwarm integration (bug 28915)

Continue implementation QUnit/TestSwarm integration (bug 28915)
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For now static html files. I have considered using load.php calls, and tried an in-wiki SpecialPage. However in order for versioned testing to work in TestSwarm it must be possible to do a checkout of a revision, alias or put it in a web-acccesible directory (eg. domain/tmp-svn/r1234/resources/test) and it must work right away (without needing database or LocalConfig or permission rules to avoid the wiki being modified).

For that reason I chose for a static html page for now.

Right now it loads mediawiki.js and mediawiki.util.js modules and I created complete tests for these modules.